quadratic rv525

How high would you jump if the equation for jumping from a cliff is:    
h(t) = -16t² + 8t + 24?

• 25

• 24

• 8

• 26

An object in launched directly upward at 64 feet per second (ft/s) from a platform 80 feet high. Its height is represented by the equation 
s(t) = –16t² + 64t + 80.
What will be the object's maximum height? 

• 2 ft

• 80 ft

• 144 ft

• 64 ft

How fast would you reach the water if you jump of a cliff using the formula:    h(t) = -16t² + 8t + 24?

• 8

• 1

• 1.5

• 1/4

At what time would you reach 16 ft above the water if you jump of a cliff using the formula:    
h = -16t² + 8t + 24?

• 8

• 1

• 1/2

• 1/4

In order to find the vertex of an in standard form, the first two steps are to use the equation _____ to find the x value, and then you can plug that value back into the equation to find the _____.

• -b/2a, y-value

• (x-h)^2, y-intercept
  

• (x-r1), solution

• ax^2, vertex

Find the vertex of 
f(x) = -x² - 4x + 12.

• (-2, 16)

• (-2, 14)

• (2, 4)

• (-2, 4)

• 8 seconds

• 2.5 seconds

• 2.225 seconds

• 2.5 seconds

• 24 ft

• 8 ft

• 12 ft

• 10 ft

• 16 seconds

• 10 seconds

• 8 seconds 

• 14 seconds

• 240 ft

• 256 ft

• 265 ft

• 230 ft